[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/extensions/test_extension_system.h

Index: chrome/browser/extensions/test_extension_system.h
diff --git a/chrome/browser/extensions/test_extension_system.h b/chrome/browser/extensions/test_extension_system.h
index 31c299684538d83bccace7818140a2b9223d6bb0..869ff0f01db7a0c5c020c1117aec9c100469b326 100644
--- a/chrome/browser/extensions/test_extension_system.h
+++ b/chrome/browser/extensions/test_extension_system.h
@@ -25,6 +25,10 @@ class ScopedTestUserManager;
 }
 #endif
 
+namespace content {
+class BrowserContext;
+}
+
 namespace extensions {
 
 // Test ExtensionSystem, for use with TestingProfile.
@@ -78,7 +82,7 @@ class TestExtensionSystem : public ExtensionSystem {
   virtual Blacklist* blacklist() OVERRIDE;
 
   // Factory method for tests to use with SetTestingProfile.
-  static ProfileKeyedService* Build(Profile* profile);
+  static ProfileKeyedService* Build(content::BrowserContext* profile);
 
  protected:
   Profile* profile_;